Frullania pluricarinata Gottsche (Frullaniaceae, Marchantiophyta): an overlooked liverwort species in the Brazilian bryophyte flora

Frullania pluricarinata Gottsche is confirmed for the bryophyte flora of Brazil based on historical and recent collections. The species was first recorded in 1989 in Serra Negra, São Paulo, with specimens deposited in the Herbarium Senckenbergianum, Germany. In 2023, it was rediscovered in Brumadinho, Minas Gerais, significantly updating its distribution in Brazil. In addition, we address the typification of the species: although Yuzawa (1991) studied original material and informally treated the specimen in S as an “isotype,” no formal lectotypification had been proposed. In this study, we designate the S specimen as lectotype, thereby stabilizing the application of the name. With this addition, the number of Frullania Raddi species recognized in the country has increased to 39. We provide a detailed taxonomic description, highlighting diagnostic characters, comparisons within the subgenus Chonanthelia Spruce, and notes on its geographic distribution and ecology. These findings underscore the importance of integrating historical records with contemporary collections to enhance our understanding of biodiversity.